Patent CA-3088962-A1 (CA)
Title: Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same
Inventor: PANDE HARSHAD
IPC: D21H25/00
Filed: 2019-02-05
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY  (PCT) (19) World Intellectual Property             111111 10111E01111110111 11111 Organization International Bureau                             (10) International Publication Number (43) International Publication Date                WO 2019/152969 Al 08 August 2019 (08.08.2019)    WIPO I PCT (51) International Patent Classification:    ford, OH 45056-4125 (US).  ALINEJAD, Mona [US/US]; D21H 15/02 (2006.01)    D21H 25/00 (2006.01)    c/o Miami University Office for the Advancement of Re-D21H 27/00 (2006.01)                         search and Scholarship, 500 E.  High Street, 102 Roudebush Hall, Oxford, OH 45056-4125 (US). (21) International Application Number: PCT/U52019/016590 (74) Agent: ROBINSON, Eagle, H. et al.; Norton Rose Ful-bright US LLP, 98 Sari Jacinto Blvd., Suitc 1100, Austin, (22) International Filing Date: TX 78701 (US). 05 February 2019 (05.02.2019) (81) Designated States (unless otherwise indicated for every (25) Filing Language:                   English kind of national protection available): AE, AG, AL, AM, (26) Publication Language:              English    AO, AT, AU, AZ, BA, BB, BG, BII, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (30) Priority Data: DZ, EC, EE, EG, ES, FL GB, GD, GE, GH, GM, GT, HNT, 62/626,261                              05 February 2018 (05.02.2018) US FIR, HU, ID, IL, IN, IR, IS, JO, JR KE, KG, KU, KN, KR (72) Inventors; and                          KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (71) Applicants: PANDE, Harshad [CA/US]; c/o Domtar Pa-    MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, per Company, LLC, 100 Kingsley Park Drive, Fort Mill,    OM, PA, PE, PG, PII, PL, PT, QA, RO, RS, RU, RW, SA, SC 29715 (US). COFFIN, Douglas, W. [US/US]; c/o Mia-    SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, mi University Office for the Advancement of Research arid    TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  Scholarship, 500 E. High Street, 102 Roudebush Hall, Ox-= (54) Title: PAPER PRODUCTS AND PULPS WITH SURFACE ENHANCED PULP FIBERS AND  INCREASED ABSORBENCY, AND METHODS OF MAKING SAME $ T ________________________________________________________________ 6                                                    ......... a                                                .... . ....... = = ... ...... ES                                               ....... ...= 30 gsm 0%30 gsm 25%60 4 :                                                      0%60 gsm 25% ".. .... =                                                    ............  ...................    ...     44! FIG. 1 ei = (57) Abstract: This disclosure includes furnishes and paper products such as tissues comprising surface enhanced pulp fibers ("SEPF") 1111 and related methods. In somc embodiments, SEPF have a weighted average fibcr length of at least 0.3 millimeters (mm) and an average cN hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprisc at least 2% SEPF by dry weight. In somc embodiments, a paper product comprising SEPF can bc formcd from a furnish =    having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less. [Continued on next page) WO 2019/152969 Al 11111 10111E11 111111 OH 1111111111 1111 11 11111111 NI 1111 (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA. RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ' , BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, Iva, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: ¨    with international search report (Art. 21(3))